Yin-yang structure



FIG. 1 is a front elevation view of the yin-yang structure, showing my new design;

FIG. 2 is a right elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top, front, right perspective view thereof; and,

FIG. 8 is a bottom, rear, left perspective view thereof. 

CLAIM The ornamental design for a yin-yang structure, as shown. 